Vanguard – a proposed European astrobiology experiment on Mars
We propose a new type of robotic mission for the exploration of Mars. This mission is called Vanguard and represents the fruits of a collaboration that is both international and […]
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Read more of: Vanguard – a proposed European astrobiology experiment on Mars
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First documentation of leopard seal predation of South Georgia pintail duck
Read more of: First documentation of leopard seal predation of South Georgia pintail duckLeopard seals are regular winter visitors to Bird Island, South Georgia, where they mostly prey on fur seals and penguins, and to a lesser extent on Antarctic krill and fish. […]
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Volatility of unevenly sampled fractional Brownian motion: An application to ice core records
Read more of: Volatility of unevenly sampled fractional Brownian motion: An application to ice core recordsThe analysis of many natural time series and especially those related to ice core records often suffers from uneven sampling intervals. For fractional Brownian motion, we show that standard estimates […]
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Glacier retreat on South Georgia and implications for the spread of rats
Read more of: Glacier retreat on South Georgia and implications for the spread of ratsUsing archival photography and satellite imagery, we have analysed the rates of advance or retreat of 103 coastal glaciers on South Georgia from the 1950s to the present. Ninety-seven percent […]
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High levels of spatial heterogeneity in the biodiversity of soil prokaryotes on Signy Island, Antarctica
Read more of: High levels of spatial heterogeneity in the biodiversity of soil prokaryotes on Signy Island, AntarcticaIn a previous study, soil bacterial diversity at environmentally distinct locations on Signy Island was examined using denaturing gradient gel electrophoresis (DGGE) profiling, and a range of chemical variables in […]
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The role of Southern Ocean processes in orbital and millennial CO2 variations – a synthesis
Read more of: The role of Southern Ocean processes in orbital and millennial CO2 variations – a synthesisRecent progress in the reconstruction of atmospheric CO2 records from Antarctic ice cores has allowed for the documentation of natural CO2 variations on orbital time scales over the last up […]
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Seasonal and interannual variation of dissolved iodine speciation at a coastal Antarctic site
Read more of: Seasonal and interannual variation of dissolved iodine speciation at a coastal Antarctic siteDissolved iodine speciation in surface seawater at a coastal Antarctic site has been studied over a period spanning three austral summers. The sampling site is biologically productive, with a summertime […]
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Testing metabolic scaling theory using intraspecific allometries in Antarctic microarthropods
Read more of: Testing metabolic scaling theory using intraspecific allometries in Antarctic microarthropodsQuantitative scaling relationships among body mass, temperature and metabolic rate of organisms are still controversial, while resolution may be further complicated through the use of different and possibly inappropriate approaches […]
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Gene expression associated with changes in cold tolerance levels of the Antarctic springtail, Cryptopygus antarcticus
Read more of: Gene expression associated with changes in cold tolerance levels of the Antarctic springtail, Cryptopygus antarcticusThe ability of the Antarctic microarthropod Cryptopygus antarcticus (Collembola, Isotomidae) to survive low temperatures has been well studied at the physiological level, with recent investigations indicating the importance of the […]
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Climatology and variability of Southern Hemisphere marine cold-air outbreaks
Read more of: Climatology and variability of Southern Hemisphere marine cold-air outbreaksMarine cold air outbreaks (MCAOs) are events where cold air flows over a relatively warm sea surface. Such outbreaks are associated with severe mesoscale weather systems that are not generally […]
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The Antarctic palaeo record and its role in improving predictions of future Antarctic Ice Sheet change
Read more of: The Antarctic palaeo record and its role in improving predictions of future Antarctic Ice Sheet changeThis paper reviews the ways in which the palaeo record of Antarctic Ice Sheet change can be used to improve understanding of contemporary ice sheet behaviour, and thus enhance predictions […]
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A model for the consolidation of rafted sea ice
Read more of: A model for the consolidation of rafted sea iceRafting is one of the important deformation mechanisms of sea ice. This process is widespread in the north Caspian Sea, where multiple rafting produces thick sea ice features, which are […]